Preheat the oven to 350 degrees.
Combine butter, peanut butter, sugar, and brown sugar in a large bowl and mix together till creamy, about 2 minutes.
Stir in the vanilla and the egg and mix till just combined.
Add salt, baking soda, flour and mix. (Start with 1 1/4 cup flour and add more in one tablespoon at a time until the cookie dough is a good texture, not too sticky, and not too dry)
Roll cookies into 1 tablespoon sized balls. Place into remaining sugar and roll to coat.
Place balls on a cookie sheet lined with parchment or silicone, about 2 inches apart from each other.
Bake for 8-9 minutes until the cookies are golden and just start to crack.
Remove cookies from the oven and push a chocolate kiss into the top of each cookie (they will crack more).
Allow the chocolate kiss to sit for a few minutes till its soft throughout.
Press a red or brown chocolate candy onto the middle of the chocolate kiss and press it down a bit for the nose.
Press two chocolate eyes into the top of the chocolate kiss for the reindeer's eyes.
Break pretzels in half and then you can break a little more off each half to make them like the antlers pictured.
Melt chocolate in the microwave in 30 second increments and stir after each till smooth. (It shouldn't take more than 1 minute)
Dip bottom of the pretzel into the melted chocolate and press them into the top of the cookie for the antlers.
Allow the cookies to sit on a cooling rack till cook completely and the chocolate is set.